1. A. whole (The "wh" is pronounced /h/, while the others have the "w" sound.)
2. B. socket (The "o" in "socket" is pronounced /ɒ/ while in the others it is pronounced /oʊ/ or /ə/.)
3. C. experiment (The "e" in "experiment" is pronounced differently than in the others.)
4. A. comment (The "o" in "comment" is pronounced /ɒ/ while the others are pronounced /oʊ/.)
5. C. speaker (The "ea" in "speaker" is pronounced /iː/, while the others are pronounced differently.)

Ex 2: Choose the word whose stress is different from that of the rest.

1. A. interest (The stress is on the first syllable, while the others are stressed differently.)
2. A. connect (The stress is on the second syllable, while the others are on the first syllable.)
3. D. career (The stress is on the second syllable, while the others are on the first syllable.)
4. B. police (The stress is on the second syllable, while the others are on the first syllable.)
5. C. even (The stress is on the first syllable, while the others are stressed differently.)

Ex1: Choose the word whose underlined part is pronounced differently.

1. A. whole B. when C. where D. while
   Answer: A. whole (The "wh" is pronounced /w/, while the others are pronounced /h/.)

2. A. notice B. socket C. enroll D. mobile
   Answer: C. enroll (The "e" is pronounced as /ɛ/ in "enroll," while the others have the "o" sound /əʊ/.)

3. A. engineer B. exercise C. experiment D. exhibition
   Answer: C. experiment (The "e" in "experiment" is pronounced /ɪ/, while the others have /e/.)

4. A. comment B. equipment C. improvement D. development
   Answer: A. comment (The "o" in "comment" is pronounced /ɒ/, while the others have /ə/.)

5. A. bean B. teammate C. speaker D. overhead
   Answer: A. bean (The "ea" in "bean" is pronounced /iː/, while the others have different vowel sounds.)

Ex2: Choose the word whose stress is different from that of the rest.

1. A. interest B. performance C. civilian D. society
   Answer: A. interest (Stress is on the first syllable, while others are on the second syllable.)

2. A. connect B. travel C. deny D. return
   Answer: B. travel (Stress is on the first syllable, while the others are on the second syllable.)

3. A. writer B. teacher C. builder D. career
   Answer: D. career (Stress is on the second syllable, while the others are on the first syllable.)

4. A. equip B. police C. offer D. escape
   Answer: B. police (Stress is on the second syllable, while the others are on the first syllable.)

5. A. amaze B. signal C. even D. village
   Answer: D. village (Stress is on the first syllable, while the others are on the second syllable.)